From owner-freebsd-stable@FreeBSD.ORG Tue Jun 14 09:30:23 2005 Return-Path: X-Original-To: freebsd-stable@freebsd.org Delivered-To: freebsd-stable@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 82F4A16A41C for ; Tue, 14 Jun 2005 09:30:23 +0000 (GMT) (envelope-from killing@multiplay.co.uk) Received: from multiplay.co.uk (www1.multiplay.co.uk [212.42.16.7]) by mx1.FreeBSD.org (Postfix) with ESMTP id 093D143D1D for ; Tue, 14 Jun 2005 09:30:22 +0000 (GMT) (envelope-from killing@multiplay.co.uk) Received: from vader ([212.135.219.179]) by multiplay.co.uk (multiplay.co.uk [212.42.16.7]) (MDaemon.PRO.v8.0.2.R) with ESMTP id md50001524112.msg for ; Tue, 14 Jun 2005 10:24:49 +0100 Message-ID: <005301c570c3$93fde1f0$b3db87d4@multiplay.co.uk> From: "Steven Hartland" To: , "Stephen Montgomery-Smith" References: <20050610170707.T66195@ns1.as.pvp.se> <01fe01c56dd3$9fa11bf0$b3db87d4@multiplay.co.uk> <42A9F2DB.8050600@math.missouri.edu> <20050614000505.GD739@Alex.lan> Date: Tue, 14 Jun 2005 10:29:31 +0100 MIME-Version: 1.0 Content-Type: text/plain; format=flowed; charset="iso-8859-1"; reply-type=original Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.2527 X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2900.2527 X-Spam-Processed: multiplay.co.uk, Tue, 14 Jun 2005 10:24:49 +0100 (not processed: message from valid local sender) X-MDRemoteIP: 212.135.219.179 X-Return-Path: killing@multiplay.co.uk X-MDaemon-Deliver-To: freebsd-stable@freebsd.org X-MDAV-Processed: multiplay.co.uk, Tue, 14 Jun 2005 10:24:49 +0100 Cc: kama , freebsd-stable Subject: Re: 5.4 not running HTT X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 14 Jun 2005 09:30:23 -0000 [quote=FreeBSD-SA-05:09.htt.asc] NOTE: For users that are certain that their environment is not affected by this vulnerability, such as single-user systems, Hyper-Threading Technology may be re-enabled by setting the tunable "machdep.hyperthreading_allowed". [/quote] ----- Original Message ----- From: "Alex de Kruijff" > On Fri, Jun 10, 2005 at 03:06:51PM -0500, Stephen Montgomery-Smith wrote: >> Steven Hartland wrote: >> >Have a read /usr/src/UPDATING it explains. >> > >> >> It should be in /usr/src/UPDATING, but I don't see it there myself. >> >> I got bitten by the same problem. The other guy who gave >> ftp://ftp.freebsd.org/pub/FreeBSD/CERT/advisories/FreeBSD-SA-05:09.htt.asc >> provided the right answer, but it should be also mentioned in UPDATING. > > Now it is. But its a bit vage. (i.e. what is a knob) > 20050513: p1 FreeBSD-SA-05:09.htt > Add a knob for disabling/enabling HTT. Default off due to > information > disclosure on multi-user systems. > > I assume it can be turned on by > echo 'kern.sched.ipiwakeup.htt2=1' >> /etc/sysctl.conf > > -- > Alex > > ================================================ This e.mail is private and confidential between Multiplay (UK) Ltd. and the person or entity to whom it is addressed. In the event of misdirection, the recipient is prohibited from using, copying, printing or otherwise disseminating it or any information contained in it. In the event of misdirection, illegible or incomplete transmission please telephone (023) 8024 3137 or return the E.mail to postmaster@multiplay.co.uk.